Medium-mu twin triode. Widely used in audio amplifiers and other applications in radio and television circuits.
The 6SN7GT and 6SL7GT were the first single-ended twin triodes, introduced c 1941. This example with the GTA suffix has the same characteristics as the original tube but has additional ratings for use as a vertical deflection amplifier in television receivers. As of 2010, this valve is still being manufactured in Russia and China.
CSIRAC ( first computer in Australia) used a large number of 6SN7GT valves.
Manufacturer: AWV, Sydney, Australia.
6.3 V indirectly heated cathode. Used as a Class A amplifier.

Physical Description

Tubular bulb with octal base.

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